
9 947120M
BATTERY
FEED
A GROUND
A BATTERY
TIP
RING
MICROPROCESSOR
TONE DECODER
K1
K2
K8
POWER
SUPPLY
B GROUND
B BATTERY
LAMP SUPPLY
LAMP
AGE CONTROL
R29
R3
R1
R0
S2
S2
S21
S2
S9
S8
S2
S1
K1
K3
K4
K5
K1
K2
K2
K3
K4
K5
K6
K7
K8
K8
SW1
SW2
VOICE ANNOUNCE
OR
HANDSFREE CIRCUIT
SIMPLIFIED SCHEMATIC DIAGRAM
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